Laterally shiftable railway car spring suspension

ABSTRACT

The spring-like supporting elements are connected at one end to either the body or the bogie while a deflecting element is connected to the other end of each supporting element. The lever serves to reduce the lateral movement of the deflecting elements in proportion to the lengths of the sub-divided lever arm. Thus, the supporting elements are subjected to only a fraction of the total displacement between the body and the bogie.

United States Patent 1191 Kreissig .1011. 0, 19741 [54] LATERALLY SHIFTABLE RAILWAY CAR 3,628,465 12/1971 Dobson et a1 105/199 R X SPRING SUSPENSION 1,728,832 9/1929 Kjolseth 105/199 R X 2,197,831 4/1940 Rothler 105/171 [75] Inventor: Ernst Flonan Krelsslg, Seuzach, 2,962,981 12/1960 Peras 105 199 R Switzerland 3,631,810 1/1972 Bing 105/210 X 3,443,528 5/1969 Lipsius et a1 105/171 [73] Asslgnee Bmthm Ltd-1 3,557,709 1/1971 Hilfing et a1. 105/199 R Switzerland [22] Filed: June 15, 1971 Primary Examiner-Gerald M. Forlenza Assistant Examiner-Howard Beltran [21] Appl' 153239 Att0rneyKenyon & Kenyon Reilly Carr & Chapin [30] Foreign Appllchatlon Prumty Data [57] ABSTRACT June 17, 1970 Sw1tzerland 9155/70 The sprlng-llke supportlng elements are connected at 52 11.s.c1. 105/199 R, 105/171, 105/210, one end to either the y or the begie while a 5 5 3 flecting element is connected to the other end of each 51] Int CL 3/00, B61f 5/14, B6lf 5 /20 supporting element. The lever serves to reduce the lat- [58] Field of Search 105/164, 171, 199 A, era] movement of the deflecting elements in P 105/199 p 199 C3, 9 R, 210 4 3 tion to the lengths of the sub-divided lever arm. Thus,

the supporting elements are subjected to only a frac- [56] References Cited tion of the total displacement between the body and UNITED STATES PATENTS the 2,515,812 7/1950 Waldvogel et a1. 105/199 R 10 Claims, 9 Drawing Figures PATENTED AN 8 I974 3, 783.. 796

swim. or 3 PATENTEDJAN 81874 same 0P3 Fig.1;

LATERALLY SHIFTABLE RAILWAY CAR SPRING SUSPENSION This invention relates to a bogie for railway vehicles and, more particularly, to a suspension system for a railway vehicle.

eral deviations. For example, in the case of a locomotive having a frame supported on three bogies, which may be either undivided or else be composed of two mobile halves able to move relatively to one another about a horizontal transverse axle, lateral displacements of between 7.874 and 10.811 inches (200 and 300 millimeters (mm)) may occur between the middle bogie and the vehicle body. Such twisting movements can not be taken up solely by a deformation of the supporting element without exceeding allowable loads.

Accordingly, it is an object of the invention to improve the connection between the vehicle body and the bogies in this respect, and to create a support which, in comparison with known arrangements having a more or less great deformation of the supporting elements, permits substantially greater twisting movements than hitherto of the two parts relative to one another.

lt is another object of the invention to ensure the stability of a suspension system between a railroad vehicle body and a bogie supporting the same.

It is another object of the invention to reduce the lateral deflection of elastic supporting elements in a suspension system between a rail vehicle body and a bogie.

It is another object of the invention to provide narrow limits for permissible lateral deviations of the elastic supporting elements connected between a bogie and a rail vehicle body.

Briefly, the invention provides a suspension system having vertically disposed supporting elements which are subjected to a fraction of the total lateral movement between a railroad vehicle body and a bogie. The system includes movable deflecting elements which are able to move transversely of the direction of travel of the vehicle relative to the bogie and vehicle body respectively. The deflecting elements are connected to a displacing lever means which is positively controlled by the vehicle body and bogie so as to be moved laterally in response to a lateral movement between the vehicle body and the bogie.

With the system of the invention, only a part of the lateral deviation of the vehicle body relative to the bogie is taken by a corresponding lateral deformation of the supporting elements, while the remainder of deviation is taken by a displacement of the vehicle body relative to the deflecting elements. In this way, it is possible for the twisting of the vehicle body and the bogie relative to one another, within the scope of the order of magnitude usual with railroad vehicles, to be of almost any desired magnitude without the supporting elements having to be loaded any more than previously in the horizontal direction.

A further advantage of the invention is that with less deformation of the supporting elements, there is a corresponding diminution of the return-motion force acting against the deflecting movement, as compared with the previous arrangements.

In one embodiment, a damping of the lateral swinging of the vehicle body, which is often very desirable when traveling round curves, is obtained by providing each deflecting element with a slide-surface that cooperates with a corresponding supporting surface of the vehicle body or of the bogie.

If no damping or only a slight damping of the lateral swinging is striven for, then in one form of construction of the invention, an arrangement for supporting the vehicle body with little friction and working with correspondingly little wear can be created. To this end, the supporting elements are fastened at one end to the bogie or to the vehicle body, and the deflecting elements are attached to the freeends of the supporting elements to cooperate over movably installed supporting means with the adjacent part of the vehicle body or of the bogie. Such an arrangement can, for example, be used with advantage for the middle bogie of three bogies of a locomotive, whereby the two outer bogies deflecting elements may have slide-surfaces. Through this, only the elements which deflect a relatively small amount participate in the .damping of the swinging, while the middle deflecting elements, which take most of the deviation, are practically free to position themselves.

In another embodiment, an approximately frictionfree support of the vehicle body is obtained. In this embodiment, the supporting elements are each connected with the bogie and with the vehicle body while the deflecting elements each engage the supporting elements intermediately of the supporting length. With this arrangement, the supporting elements are guided laterally by the deflecting elements subdividing their free length, and are thus ensured against kinking, so that relatively slim and especially softly elastic supporting elements may be used.

In a further embodiment, the system is provided with a means such as a lever between the supporting elements which is, pivotable transversely of the direction of travel. This lever is movably connected with the vehicle body on one end and with the bogie on the other end. In addition, the lever is articulated to two links that subdivide the length of the lever in a predetermined ratio. With this arragement, the ratio between the two partial deviations, formed by the shift of the body relatively to the deflection elements and by the deformation of the supporting elements, can be influenced by a suitable choice of the ratio in which the lever length is subdivided.

In still another embodiment, that advantageously lowers construction costs, one end of the layer is fastened to the vehicle body or to the bogie, and the other end is fastened to a guide-part mounted on the bogie or on the vehicle body to permit pivoting of the lever.

A particularly low overall height of the suspension system can be obtained in a further embodiment by using a hydraulic or pneumatic control device associated with the vehicle body and the bogie.

These and other objects and advantages of the invention will become more apparent from the following detailed description and appended claims taken in conjunction with the accompanying drawings in which:

FIG. 1 illustrates a cross sectional view of a suspension system made in accordance with the invention between a bogie and a vehicle body supported thereon;

FIG. 2 illustrates a view similar to FIG. 1 with the vehicle body displaced laterally with respect to the bogie;

FIG. 3 illustrates a cross-sectional view of another embodiment of a connection between the lever and bogie;

FIG. 4 illustrates a cross-sectional view of another embodiment wherein the deflecting elements are connected by pivotal rods to the vehicle body;

FIG. 5 illustrates a cross-sectional view of another embodiment wherein the deflecting elements are interconnected to intermediate points of the supporting elements;

FIG. 6 illustrates a view ofa modified means for controlling the displacement of the deflecting elements;

FIG. 7 illustrates a view similar to FIG. 1 wherein the supporting elements are fastened to the vehicle body;

FIG. 8 illustrates a cross-sectional view of a modified mounting arrangement for a supporting element and deflecting element; and

FIG. 9 illustrates a further modified arrangement between a deflecting element and the underside ofa vehicle body.

Referring to FIG. 1, a railroad vehicle has a vehicle body 1 which is supported on a plurality of bogies 2, only one of which is shown for purposes of clarity. The bogie 2, in turn, is supported on a wheel frame including a pair of wheels 13 which ride off tracks 10, a shaft 11 on which the wheels 13 are secured, and suitable bearing boxes 12 in which the shaft 11 is journalled as is known. As shown, the bogie 2 is secured to the bearing boxes 12 in a rigid manner.

A suspension system 8 is secured between the underside of the vehicle body 1 and the topside of the bogie 2 in order to permit relative movements between the body 1 and bogie 2. This system 8 includes a pair of elastic supporting elements 3, such as, coil springs, each of which is secured at the lower end to the bogie 2. In addition, a deflecting element 4 is mounted on the upper end of each supporting element 3 and has de pending flanges between which the upper end ofa supporting element 3 is received as'shown. Each deflecting element 4 is further positioned in slidable contact with the underside of the vehicle body 1. To this end, the deflecting elements 4 and vehicle body 1 have cooperating slide surfaces 14 and supporting surfaces 15, respectively, to permit a relative sliding movement therebetween. A lever 5 which is vertically disposed under the vehicle body I is pivotally connected at one end via a suitable pivot or hinge 17 to the vehicle body 1 and pivotally connected at the opposite end to a transversely disposed link 7 which is pivotally connected via a suitable pivot or hinge 18 flxed to the bogie 2. Also, a pair of links 60, 6b are linked to opposite sides of the lever 5 at an intermediate point of the lever 5. Each link 6a, 6b extends transversely to connect at the opposite end to a respective deflecting element 4 via a suitable pivot or hinge l6 fixed to each deflecting element 4 so as to permit movement of the deflecting elements 4 in unison.

Referring to FIG. 2, when traveling around a curve of the track the vehicle body 1 shifts sideways relative to the bogie 2. The lever 5 connected to the transverse link 7 is then shifted out of the vertical position as shown in FIG. 1 by an amount x. The transverse link 7, transmitting the shifting force, positions itself, in accordance with the pivoted position of the lever 5 now prevailing, at a corresponding altitude, so that the free clearance of the supporting elements 3 in the vertical direction does not become adversely affected.

Because of the positive connection of the deflecting elements 4 with the lever 5 of the suspension system 8, the deflecting elements 4, with the upper ends of the supporting elements 3, do not shift out of their position of rest as shown in FIG. 1 by the entire amount x, but only by an amount x which is a fraction of the entire amount while the car body 1 shifts relatively to the deflecting elements 4 by an amount x, which is also a fraction of the entire amount. For example, where the links 6a, 6b engage in the middle of the lever 5, the amounts x, and x each correspond to half the total deviation x.

In addition, because of the friction produced by the sliding of the vehicle body 1 on the deflection elements 4, a damping of the lateral swinging of the body 1 is obtained.

The ratio between the partial deviations x, and x can be made as desired. For example, by lowering the linkon locations of the links 6a, 6b to the lever 5, the amount x; can be increased relatively to the amount x so that the greater part of the deviation occurs between the vehicle body and the deflecting elements 4. Thus, a correspondingly smaller residual amount of deviation is taken up by the supporting elements 3. The supporting elements 3 are thereby loaded chiefly in a vertical direction. Alternatively, by raising the link-on locations of the links 6a, 6b to the lever 5, the amount x produced by the shifting of the vehicle body 1 relative to the deflection elements 4 can be correspondingly reduced relatively to the quantity 1:; of deviation of the supporting elements 3.

Referring to FIG. 3, wherein like reference characters indicated like parts as above, the bogie 2 can also be provided with a different kind of suspension system in which a lever 5', mounted on the vehicle body 1 as above, is guided at the free end in a guide-part 9 mounted in the frame of the bogie 2. Thus, the lever 5 can also made the pendular movements produced by a lateral deviation without the free play of the springs 3 being impaired.

Referring to FIG. 4 wherein like reference characters indicate like parts as above, the free ends of the supporting elements 3 are connected with deflection elements 21 to which are articulated, in each case, two upright pendular connectors or rods 22. The pendular connectors 22 are hinged to the underside of a car body 23 so as to support the body 23 on the bogie 2. The deflecting elements 21 are, as with the arrangement of FIG. 1, connected to a suspension system 8.

In operation, when a sideways shift of the car body 23 occurs relative to the bogie 2, the pendular connectors 22 become correspondingly slanted. As a result, the deflecting elements 21 along with the upper ends of the supporting elements 3 become deflected out of the illustrated position of rest by a partial amount determined by the subdivision of the lever 5. For example,

with the illustrated example, the deflection amounts to about half of the total deviation. The supporting elements 3, because they are articulated together, are thus advantageously subjected to less wear.

Referring to FIG. 8, in order to keep the height of the support connection small, the vehicle body 23 may, at both sides of the supporting elements 3, be provided with downwardly extending links 24 having lower ends articulated to a pendular rod 25 articulated, in turn, to a suitable deflecting element 21' mounted on top of a supporting element 3.

Referring to FIG. 5, wherein linke reference characters indicate like parts as above, each supporting element 3' consists of two part-elements 3a, 3b fastened at opposite ends to the vehicle body 23 and the bogie 2 respectively, while the facing ends are connected to a deflection element 26 controlled in the above described manner. With this arrangement, upon twisting of the vehicle body 23 and the bogie 2 relative to one another, the part-elements 3a, 3b being of substantially equal length deviate only about half the total deviation. The total length of the supporting elements 3' is consequently subdivided in accordance with the ratio in which the lever 5 is subdivided, through which the stability of the supporting elements 3' is improved. This arrangement is particularly suitable for railroad cars with which value is placed on gentle vertical springing. As a result of the lateral guidance of the supporting elements 3', this construction can be particularly slim, and nevertheless, with comparable height of the supporting elements, be loaded with greater eccentricity, that is, be deviated a greater amount than previously. Instead of two part-elements of equal length, 3a and 3b, it is also possible to use support elements of different lengths, or one-piece elements, the latter being guided at some desired medium height by e.g. cuff-shaped elements.

Referring to FIG. 6, wherein like reference characters indicate like parts as above, an advantageously small height of the supporting arrangement is obtained by disposing the supporting elements 3 in holders 29 attached laterally to the frame of the bogie 2. With this arrangement, the supporting elements 3 can be installed at lower-points by about the height of the bogie frame. The control of the deflecting elements 4 is also effected by a hydraulic displacing means 28, which comprises a pressure cylinder 31 articulated to the body 1, and two control cylinders 32 immovably connected to the body 1. A pressure piston 33 is piloted in the pressure-cylinder 31 and has a piston-rod 34 which extends out of the cylinder 31 through a seal and is articulated to the frame of the bogie 2, as shown. The control cylinders 32 each have a piloted control piston 35 which have a piston-rod 36 extending out of the cylinders 32 through a seal. Each piston rod 36 is connected with one of the two deflection elements 4. The pressure cylinder 31 is divided by the piston 33 into two piston-stroke spaces 43, 44 which are each connected over a control line 37, 38 respectively, to corresponding piston-stroke spaces 39 or 40 in the two control cylinders 32 in such a way that the pressure piston 33 and the control pistons 35 are able to carry out similarly directed strokes transversely of the direction of travel of the vehicle under the influence of a control medium filling up the respective spaces and lines.

Alternatively, the pressure cylinder 32 may be connected with the bogie 2 and the pressure piston 33 may be connected with the vehicle body 1. However, with such an arrangement, the control line 37 would consequently have to be connected with the piston-stroke space 44 and the control line 38 would have to be connected with the piston-stroke space 43.

in use, when a lateral shift of the vehicle body 1 takes moves from the middle position as shown and moves toward the right, as viewed, relative to the pressure piston 33. The hydraulic fluid is thus forced out of the piston-stroke space 43 of the pressure cylinder 31, and passes through the control line 37 into the pistonstroke spaces 39 of the two control cylinders 32. As a result, the control pistons 35 move counter to the deflecting movement of the vehicle body 32, i.e. the left, out of the middle position. The hydraulic fluid forced out of the piston-stroke spaces 40 consequently passes into the piston-stroke space 44 of the pressure cylinder 31.

Because the hydraulic fluid emerging from the pressure cylinder 31 is distributed to the two control cylinders 32, in the case of equal-size cylinder and piston diameters, the stroke of each of the two control pistons 35 is half that of the pressure piston 33. The deflecting elements 4 are consequently shifted by the control pistons 35 in each case only half the total deflection. The other half of the deflection, as with the arrangement of FIGS. 1 and 2, is taken up by a shift of the deflection elements 4 relative to the slide-surfaces 14 of the vehicle body 1.

place relative to the bogie 2, the pressure cylinder 31 Various other forms of construction are also possible.

For example, instead of the described arrangements based on displacement of a control medium, use could be made of a power-coupled arrangement. Similarly, the operation of the shifting arrangement might be accomplished pneumatically or in some other way, e.g. by a suitably controlled servomotor.

The ratio of the partial deviations of the deflection elements 4 to the total shift of the vehicle body 1 is selected as desired through the ratio of cylinder and piston cross sections.

Referring to FIG. 7 wherein like reference characters indicate like parts as above, the supporting elements 3 can alternatively be fastened to the vehicle body 23 while the deflection elements 4 are slidably mounted for lateral displacement on suitable parts 42 of the bogie 2 and are connected with the suspension system 8. The suspension system 8 may also be made so that articulated lever 5 is articlated to the bogie 2 with the crows-link 7 cross-link to the vehicle body 1 (not shown). It is evidence that the supporting arrangements of FIGS. 1, 3, 4 and 5 may be similarly modified.

Referring finally to FIG. 9, in the event that the vibration damping obtainable by sliding friction is done without, in order to keep wear of the cooperating parts small, roller bearings 41 are provided between the deflecting elements 4 and the parts of the vehicle body 1 being supported.

What is claimed is: v

1. In combination with a railroad vehicle body and a bogie, a suspension system comprising a pair of laterally spaced vertically disposed elastic supporting elements, each element having an upper end and a lower end and being fixedly connected at one end to one of said body and bogie;

a pair of movable deflecting elements, each deflecting element being mounted on an opposite end of a respective supporting element intermediately between said body and said bogie for lateral movement relative to said body and said bogie; and

a displacing lever means connected directly to said deflecting elements to move said deflecting elements in unison and connected at opposite ends thereof to said body and said bogie respectively to effect lateral movement of said opposite ends relative to each other in response to lateral movement between said body and said bogie, said means causing said deflecting elements to move laterally a fraction of the lateral movement between said body and said bogie in response to a lateral movement between said body and bogie.

2. The combination-as set forth in claim 1 wherein said one of said body and said bogie has a pair of supporting surfaces thereon and each said deflecting element has a slide surface thereon opposite one of said supporting surfaces.

3. The combination as set forth in claim 2 which further comprises at least one roller between said opposed surfaces.

4. The combination as set forth in claim 1 which further comprises at least one pendular rod connected pivotally between each said deflecting element and the other of said body and bogie.

5. The combination as set forth in claim 1 wherein said means includes a lever pivotally connected at opposite ends to each of said body and said bogie respectively for pivoting transversely of the direction of travel of said body and said bogie; and a pair of links, each link being pivotally connected at one end to an intermediate point of said lever and at an opposite end to a respective deflecting element.

6. The combination as set forth in claim 5 which further comprises a transversely disposed link pivotally mounted at one end on one of said body and said bogie and pivotally connected at an opposite end to one en of said lever.

7. The combination as set forth in claim 5 which further comprises a guide element in one of said body and said bogie, said lever having one end pivotally mounted therein.

8. The combination as set forth in claim 1 wherein said means includes a fluid actuated pressure cylinder connected to one of said body and said bogie, a piston reciprocally mounted in said cylinder and connected to the other of said body and said bogie, and a pair of control devices operably connected to said cylinder and to said deflecting elements for moving said deflecting elements in response to a relative movement of said piston in said cylinder.

9. A suspension system for supporting a railroad vehicle body on a bogie comprising a pair of laterally spaced elastic supporting elements;

a pair of movable deflecting elements, each deflecting element being connected to one end of a respective supporting element to move transversely of the direction of travel of the vehicle relative to the body and the bogie; and

a displacing lever means connected to said deflecting elements to move said deflecting elements in unison, said means being connected at opposite ends to the body and the bogie for imparting motion to said deflecting elements in response to a lateral movement of said opposite ends apart from each other, said motion being a fraction of said lateral movement of said opposite ends.

10. In combination with a railroad vehicle body and a bogie, a suspension system comprising a pair of laterally spaced vertically disposed elastic supporting elements, each element being fixedly connected at one end to said body and at an opposite end to said bogie;

a pair of movable deflecting elements, each deflecting element being mounted intermediately of a respective supporting element intermediately between said body and said bogie for lateral movement relative to said body and said bogie; and

a displacing lever means connected directly to said deflecting elements to move said deflecting elements in unison and connected at opposite ends thereof to said body and said bogie respectively to effect lateral movement of said opposite ends relative to each other in response to lateral movement between said body and said bogie, said means causing said deflecting elements to move laterally a fraction of the lateral movement between said body and said bogie.

UNITED STATES rATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,783,796 Dated January 974 Inventor(s) Ernst Florian Kreissig It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 6, line 42, articulated lever 5 should be --the lever 5--o column 6, line 43, "crows-link 7 cross-link" should be "cross-link 7 articulated--.

Delete claim 8.

Add the following claim:

In combination with a railroad vehicle body and a bogie, a suspension system comprising a pair of laterally spaced vertically disposed elastic supporting elements, each element having an upper end and a lower end and being fixedly connected at one end to one of said body and bogie;

a pair of movable deflecting elements, each deflecting element being mounted on an opposite end of a respective supporting element intermediately between said body and said bogie for lateral movement relative to said body and said bogie; and

a displacing means connected di: .actly to said deflecting elements to move said deflecting elements in unison and connected at opposite ends thereof to said body and said bogie respectively to effect lateral movement of said opposite ends relative to each other in response to lateral movement between said body and said bogie, said means causing said deflecting FORM PC4050 (10-69) USCOMM-DC 60376-P69 U.S. GOVERNMENT PRINTING OFFICE "II 0-366-334,

Page 2 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,783,796 Dated I January .0 97

Inventor(s) It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

elements to move laterally a fraction of the lateral movement between said body and said bogie in response to a lateral movement between said body and bogie, said means including a fluid actuated pressure cylinder connected to one of said body and said bogie, a piston reciprocally mounted in said cylinder and connected to the other of said body and said bogie, and a pair of control devices operably connected to said cylinder and to said deflecting elements for moving said deflecting elements in response to a relative movement of said piston in said cylinder.

Signed and sealed this 29th day of October 197A.

(SEAL) Attest:

MCCOY M. GIBSON JR. C. MARSHALL DANN Attesting Officer Commissioner of Patents FORM po'wso (w'eg) f uscoMM-Dc scan-Pas ii ".5. GOVERNMENT PRINTING OFFICE 1 "O9 0-386-33. 

1. In combination with a railroad vehicle body and a bogie, a suspension system comprising a pair of laterally spaced vertically disposed elastic supporting elements, each element having an upper end and a lower end and being fixedly connected at one end to one of said body and bogie; a pair of movable deflecting elements, each deflecting element being mounted on an opposite end of a respective supporting element intermediately between said body and said bogie for lateral movement relative to said body and said bogie; and a displacing lever means connected directly to said deflecting elements to move said deflecting elements in unison and connected at opposite ends thereof to said body and said bogie respectively to effect lateral movement of said opposite ends relative to each other in response to lateral movement between said body and said bogie, said means causing said deflecting elements to move laterally a fraction of the lateral movement between said body and said bogie in response to a lateral movement between said body and bogie.
 2. The combination as set forth in claim 1 wherein said one of said body and said bogie has a pair of supporting surfaces thereon and each said deflecting element has a slide surface thereon opposite one of said supporting surfaces.
 3. The combination as set forth in claim 2 which further comprises at least one roller between said opposed surfaces.
 4. The combination as set forth in claim 1 which further comprises at least one pendular rod connected pivotally between each said deflecting element and the other of said body and bogie.
 5. The combination as set forth in claim 1 wherein said means includes a lever pivotally connected at opposite ends to each of said body and said bogie respectively for pivoting transversely of the direction of travel of said body and said bogie; and a pair of links, each link being pivotally connected at one end to an intermediate point of said lever and at an opposite end to a respective deflecting element.
 6. The combination as set forth in claim 5 which further comprises a transversely disposed link pivotally mounted at one end on one of said body and said bogie and pivotally connected at an opposite end to one end of said lever.
 7. The combination as set forth in claim 5 which further comprises a guide element in one of said body and said bogie, said lever having one end pivotally mounted therein.
 8. The combination as set forth in claim 1 wherein said means includes a fluid actuated pressure cylinder connected to one of said body and said boGie, a piston reciprocally mounted in said cylinder and connected to the other of said body and said bogie, and a pair of control devices operably connected to said cylinder and to said deflecting elements for moving said deflecting elements in response to a relative movement of said piston in said cylinder.
 9. A suspension system for supporting a railroad vehicle body on a bogie comprising a pair of laterally spaced elastic supporting elements; a pair of movable deflecting elements, each deflecting element being connected to one end of a respective supporting element to move transversely of the direction of travel of the vehicle relative to the body and the bogie; and a displacing lever means connected to said deflecting elements to move said deflecting elements in unison, said means being connected at opposite ends to the body and the bogie for imparting motion to said deflecting elements in response to a lateral movement of said opposite ends apart from each other, said motion being a fraction of said lateral movement of said opposite ends.
 10. In combination with a railroad vehicle body and a bogie, a suspension system comprising a pair of laterally spaced vertically disposed elastic supporting elements, each element being fixedly connected at one end to said body and at an opposite end to said bogie; a pair of movable deflecting elements, each deflecting element being mounted intermediately of a respective supporting element intermediately between said body and said bogie for lateral movement relative to said body and said bogie; and a displacing lever means connected directly to said deflecting elements to move said deflecting elements in unison and connected at opposite ends thereof to said body and said bogie respectively to effect lateral movement of said opposite ends relative to each other in response to lateral movement between said body and said bogie, said means causing said deflecting elements to move laterally a fraction of the lateral movement between said body and said bogie. 